Brother, what's the difference?

Although brothers and sisters refer to the sons or fathers of older classmates or teachers, there are still some differences between them.

1. Different appellation objects: brothers are generally used to address people who are kindred spirits, who started their career earlier than themselves, and are also called the sons or fathers of teachers who are older than themselves; A disciple can refer to any senior who is older than himself, or to the son or father of a master who is older than himself.

2. Gender restriction: seniors can be called seniors not only among men, but also among women; Teacher's brother is generally only used as a title between men and women.

To sum up, although brothers and sisters refer to the sons or fathers of older students or older teachers, there are differences in appellation objects and gender restrictions.